Dr2bsoon
Its basic diplomacy. The U.S. takes many foreign students -- it helps spread our "good image" across the world, is part of international diplomacy (you better believe saudi arabia is doing us favors for taking their students), and it helps spread our "dominance" in academic fields across the world. But most importantly, its an academic tradition -- usually, academics should know no boundaries. Countries which are at the peak of academics attract minds from all over the world. Aside from America, many people go to England to study. Many centuries ago, it was another world power. For example, centuries ago while Europe was in the dark ages, scholars from across Central Asia and the Middle East gathered in cities like Baghdad to share their knowledge. In Muslim Spain, it was a mix of Jewish, Christian and Muslim scholars and scientists sharing knowledge. In this day and age, America and the West is at the top, so people from other countries come here. Its a part of scholarship -- sharing knowledge and spreading ideas. If today America were to shut its university's doors to foreign students you better believe there would be trouble. Go to any research lab -- many of the assistants/researchers are Asian, Indian, Arab, Russian, European, etc.
About this story, its good to see this from a Saudi woman. They're good people, and other people should realize not all Muslims are terrorists.